package firstchi.graceplayer;


import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.media.MediaPlayer;
import android.os.IBinder;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.widget.Toast;

import java.security.PublicKey;

public class MusicService extends Service {
    public static final int COMMAND_UNKNOWN = -1;
    public static final int COMMAND_PLAY = 0;
    public static final int COMMAND_PAUSE = 1;
    public static final int COMMAND_STOP = 2;
    public static final int COMMAND_RESUME = 3;
    public static final int COMMAND_PREVIOUS = 4;
    public static final int COMMAND_NEXT = 5;
    public static final int COMMAND_CHECK_IS_PLAYING = 6;
    public static final int COMMAND_SEEK_TO = 7;

    public static final int STATUS_PLAYING = 0;
    public static final int STATUS_PAUSED = 1;
    public static final int STATUS_STOPPED = 2;
    public static final int STATUS_COMPLETED = 3;

    public static final String BROADCAST_MUSICSERVICE_CONTROL = "MusicService.ACTION_CONTROL";
    public static final String BROADCAST_MUSICSERVICE_UPDATE_STATUS = "MusicService.ACTION_UPDATE";

    private int number =0;
    private int status;

    private MediaPlayer player =new MediaPlayer();

    private CommandReceiver receiver;
    private boolean phone =false;

    public void onCreate(){
        super.onCreate();
        bindCommandReceiver();
        status=MusicService.STATUS_STOPPED;
        TelephonyManager telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
        telephonyManager.listen(new MyPhoneListener(), PhoneStateListener.LISTEN_CALL_STATE);


    }

    private final class MyPhoneListener extends PhoneStateListener {

        public void onCallStateChanged(int state, String incomingNumber) {
            switch (state) {
                case TelephonyManager.CALL_STATE_RINGING:
                    if (status == MusicService.STATUS_PLAYING) {
                        pause();
                        phone=true;
                    }
                    break;
                case TelephonyManager.CALL_STATE_IDLE:
                    if (phone == true){
                        resume();
                        phone=false;
                    }
                    break;
            }
        }
    }

    @Override
    public void onDestroy(){
        if (player!=null){
            player.release();
        }

       /* if (status == MusicService.STATUS_STOPPED){
            stopService(new Intent(this,MusicService.class
            ));
        }*/
        super.onDestroy();
    }
    @Override
    public IBinder onBind (Intent arg0){
        return null;
    }
    private void bindCommandReceiver(){
        receiver=new CommandReceiver();
        IntentFilter filter=new IntentFilter(BROADCAST_MUSICSERVICE_CONTROL);
        registerReceiver(receiver,filter);
    }

    class CommandReceiver extends BroadcastReceiver {
        public void onReceive(Context context, Intent intent){
            int command = intent.getIntExtra("command",COMMAND_UNKNOWN);
            switch (command){
                case COMMAND_SEEK_TO:
                    seekTo(intent.getIntExtra("time",0));
                    break;
                case COMMAND_PLAY:
                    number =intent.getIntExtra("number",0);
                    play(number);
                    break;
                case COMMAND_PREVIOUS:
                    moveNumberToPrevious();
                    break;
                case COMMAND_NEXT:
                    moveNumberToNext();
                    break;
                case COMMAND_PAUSE:
                    pause();
                    break;
                case COMMAND_STOP:
                    stop();
                    break;
                case COMMAND_RESUME:
                    resume();
                    break;
                case COMMAND_CHECK_IS_PLAYING:
                    if (player!=null&&player.isPlaying()){
                        sendBroadcastOnStatusChanged(MusicService.STATUS_PLAYING);
                    }
                    break;
                case COMMAND_UNKNOWN:
                default:
                    break;
            }
        }
    }

    private void sendBroadcastOnStatusChanged(int status){
        Intent intent=new Intent(BROADCAST_MUSICSERVICE_UPDATE_STATUS);
        intent.putExtra("status",status);
        sendBroadcast(intent);
        if(status!=STATUS_STOPPED){
            intent.putExtra("time",player.getCurrentPosition());
            intent.putExtra("duration",player.getDuration());
            intent.putExtra("number",number);
            intent.putExtra("musicName",MusicList.getMusicList().get(number).getmusicName());
            intent.putExtra("musicArtist",MusicList.getMusicList().get(number).getmusicArtist());
        }
        sendBroadcast(intent);
    }
    private void load(int number){
        try {
            player.reset();
            player.setDataSource(MusicList.getMusicList().get(number).getmusicPath());
            player.prepare();
        }catch (Exception e){
            e.printStackTrace();
        }
        player.setOnCompletionListener(completionListener);
    }
    MediaPlayer.OnCompletionListener completionListener=new MediaPlayer.OnCompletionListener() {
        @Override
        public void onCompletion(MediaPlayer mediaPlayer) {
            if (player.isLooping()){
                replay();

            }else {
                sendBroadcastOnStatusChanged(MusicService.STATUS_COMPLETED);
            }

        }
    };

    private void moveNumberToNext(){
        if ((number)== MusicList.getMusicList().size()-1){
            Toast.makeText(MusicService.this,"已达到列表底端",Toast.LENGTH_SHORT).show();

        }else {
            ++number;
            play(number);
        }
    }

    private void moveNumberToPrevious(){
        if (number==0){
            Toast.makeText(MusicService.this,"已达到列表顶端",Toast.LENGTH_SHORT).show();

        }else{
            --number;
            play(number);
        }


    }


    private void play(int number){
        if (player!=null&& player.isPlaying()){
            player.stop();
        }
        load(number);
        player.start();
        status=MusicService.STATUS_PLAYING;
        sendBroadcastOnStatusChanged(MusicService.STATUS_PLAYING);
    }
    private void pause(){
        if (player.isPlaying()){
            player.pause();
            status=MusicService.STATUS_PAUSED;
            sendBroadcastOnStatusChanged(MusicService.STATUS_PAUSED);
        }
    }
    private void stop(){
        if (status!=MusicService.STATUS_STOPPED){
            player.stop();
            status=MusicService.STATUS_STOPPED;
            sendBroadcastOnStatusChanged(MusicService.STATUS_STOPPED);
        }

    }

    private void resume(){
        player.start();
        status=MusicService.STATUS_PLAYING;
        sendBroadcastOnStatusChanged(MusicService.STATUS_PLAYING);
    }

    private void replay(){
        player.start();
        status=MusicService.STATUS_PLAYING;
        sendBroadcastOnStatusChanged(MusicService.STATUS_PLAYING);
    }
    private void seekTo(int time){
        player.seekTo(time);
    }








}
